Mercury-Containing Species and Carbon Dioxide Adsorption Studies on Inorganic Compounds Using Density Functional Theory

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ISBN 13 :
Total Pages : 466 pages
Book Rating : 4.:/5 (752 download)

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Book Synopsis Mercury-Containing Species and Carbon Dioxide Adsorption Studies on Inorganic Compounds Using Density Functional Theory by : BO GYEONG. KIM

Download or read book Mercury-Containing Species and Carbon Dioxide Adsorption Studies on Inorganic Compounds Using Density Functional Theory written by BO GYEONG. KIM and published by . This book was released on 2010 with total page 466 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this research is to obtain the adsorption mechanisms of toxic mercury-containing species (Hg, HgCl and HgCl2) and carbon dioxide (CO2) on inorganic solid surfaces using theoretically predicted results because experiments have been unable to unravel the involved issues. The understanding of the adsorption mechanisms of the mercury species and carbon dioxide from flue gases is important when considering mercury capture from coal-fired power plants, artisanal gold mining, and cement manufacturing industries. The current research attempts to explain each adsorption mechanism for mercury species, and those for carbon dioxide adsorption, on the surfaces through optimized geometries, energies and thermodynamic data. To investigate this research, density functional theory, which is one of useful tools for analyzing reactions on solid surfaces, was used to determine first principles-based theoretical adsorption models. Mainly, results from computational work indicate that mercury-containing species and carbon dioxide adsorption on calcium oxide surfaces and elemental mercury adsorption on a gehlenite surface are exothermic reactions. Calcium oxide is a promising adsorbent for oxidized mercury (HgCl and HgCl2), but not for elemental Hg. Interestingly, the elemental mercury, which is the major form (>90%) in the flue gases of the coal-combustion power plants, is chemisorbed on a gehlenite surface, which is partially composed of calcium oxide and comes from a mineral transition at high temperature. Strong adsorption on this inorganic sorbent is enhanced at high temperatures even though this adsorption process is exothermic. In addition, CaO surfaces are effective at capturing CO2, generating calcium carbonate compounds at flue gas temperatures, and water vapor enhances its adsorbability due to a larger CO2 adsorption energy. The current research shows that inorganic sorbents are not only effective in removing the elemental and oxidized forms of mercury but also in mineralizing CO2 at high temperatures into a solid form. The mercury species and carbon dioxide adsorption mechanisms investigated in this research may be utilized in the application of more efficient mercury and carbon dioxide control technologies. Future work will examine the reaction transition state and predict the kinetic data of the carbonation reactions, and, additionally, may prove the hypothesis that H2O molecules play a role as catalysts, increasing reaction rates.

Fundamental Understanding of Mercury Removal from Coal Combustion

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Publisher : Stanford University
ISBN 13 :
Total Pages : 195 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Fundamental Understanding of Mercury Removal from Coal Combustion by : Erdem Sasmaz

Download or read book Fundamental Understanding of Mercury Removal from Coal Combustion written by Erdem Sasmaz and published by Stanford University. This book was released on 2011 with total page 195 pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal-fired power plants are a major anthropogenic source of worldwide mercury (Hg) emissions. Since mercury is considered to be one of the most toxic metals found in the environment, Hg emissions from coal-fired power plants is of major environmental concern. Mercury in coal is vaporized into its gaseous elemental form throughout the coal combustion process. Elemental Hg can be oxidized in subsequent reactions with other gaseous components (homogeneous) and solid materials (heterogeneous) in coal-fired flue gases. While oxidized Hg in coal-fired flue gases is readily controlled by its adsorption onto fly ash and/or its dissolution into existing solution-based sulfur dioxide (SO2) scrubbers, elemental Hg is not controlled. The extent of elemental Hg formed during coal combustion is difficult to predict since it is dependent on the type of coal burned, combustion conditions, and existing control technologies installed. Therefore, it is important to understand heterogeneous Hg reaction mechanisms to predict the speciation of Hg emissions from coal-fired power plants to design and effectively determine the best applicable control technologies. In this work, theoretical and experimental investigations have been performed to investigate the adsorption and in some cases the oxidation, of Hg on solid surfaces, e.g., calcium oxide (CaO), noble metals and activated carbon (AC). The objective of this research is to identify potential materials that can be used as multi-pollutant sorbents in power plants by carrying out both high-level density functional theory (DFT) electronic structure calculations and experiments to understand heterogeneous chemical pathways of Hg. This research uses a fundamental science-based approach to understand the environmental problems caused by coal-fired energy production and provides solutions to the power generation industry for emissions reductions. Understanding the mechanism associated with Hg and SO2 adsorption on CaO will help to optimize the conditions or material to limit Hg emissions from the flue gas desulfurization process. Plane-wave DFT calculations were used to investigate the binding mechanism of Hg species and SO2 on the CaO(100) surface. The binding strengths on the high-symmetry CaO adsorption sites have been investigated for elemental Hg, SO2, mercury chlorides (HgCl and HgCl2) and mercuric oxide (HgO). It has been discovered that HgCl, HgCl2, and SO2 chemisorb on the CaO(100) surface at 0.125 ML coverage. Binding energies of elemental Hg are minimal indicating a physisorption mechanism. Noble metals such as palladium (Pd), gold (Au), silver (Ag), and copper (Cu) have been proposed to capture elemental Hg. Plane-wave DFT calculations have been carried out to investigate the mercury interactions with Pd binary alloys and overlays in addition to pure Pd, Au, Ag, and Cu surfaces. It has been determined that Pd has the highest mercury binding energy in comparison to other noble metals. In addition, Pd is found to be the primary surface atom responsible for increasing the adsorption of Hg with the surface in both Pd binary alloys and overlays. Deposition of Pd overlays on Au and Ag has been found to enhance the reactivity of the surface by shifting the d-states of surface atoms up in energy. The possible binding mechanisms of elemental Hg onto virgin, brominated and sulfonated AC fiber and brominated powder AC sorbents have been investigated through packed-bed experiments in a stream of air and simulated flue gas conditions, including SO2, hydrogen chloride (HCl), nitrogen oxide (NO) nitrogen dioxide (NO2). A combination of spectroscopy and plane-wave DFT calculations was used to characterize the sorption process. X-ray photoelectron spectroscopy (XPS) and x-ray absorption fine structure (XAFS) spectroscopy were used to analyze the surface and bulk chemical compositions of brominated AC sorbents reacted with Hg0. Through XPS surface characterization studies it was found that Hg adsorption is primarily associated with halogens on the surface. Elemental Hg is oxidized on AC surfaces and the oxidation state of adsorbed Hg is found to be Hg2+. Though plane-wave DFT and density of states (DOS) calculations indicate that Hg is more stable when it is bound to the edge carbon atom interacting with a single bromine bound atop of Hg, a model that includes an interaction between the Hg and an additional Br atom matches best with experimental data obtained from extended x-ray absorption fine structure (EXAFS) spectroscopy. The flue gas species such as HCl and bromine (Br2) enhance the Hg adsorption, while SO2 is found to decrease the Hg adsorption significantly by poisoning the active sites on the AC surface. The AC sorbents represent the most market-ready technology for Hg capture and therefore have been investigated by both theory and experiment in this work. Future work will include similar characterization and bench-scale experiments to test the metal-based materials for the sorbent and oxidation performance.

Density Functional Theory Study of Mercury Adsorption on Metal Surfaces

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (873 download)

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Book Synopsis Density Functional Theory Study of Mercury Adsorption on Metal Surfaces by :

Download or read book Density Functional Theory Study of Mercury Adsorption on Metal Surfaces written by and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Density functional theory DFT calculations are used to characterize the interaction of mercury with copper, nickel, palladium, platinum, silver, and gold surfaces. Mercury binds relatively strongly to all the metal surfaces studied, with binding energies up to 1 eV for Pt and Pd. DFT calculations underestimate the energy of adsorption with respect to available experimental data. Plane-wave DFT results using the local density approximation and the Perdew-Wang 1991 and Perdew-Burke-Ernzerhof parametrizations of the generalized gradient approximation indicate that binding of mercury at hollow sites is preferred over binding at top or bridge sites. The interaction with mercury in order of increasing reactivity over the six metals studied is Ag AuCuNiPtPd. Binding is stronger on the 001 faces of the metal surfaces, where mercury is situated in fourfold hollow sites as opposed to the threefold hollow sites on 111 faces. In general, mercury adsorption leads to decreases in the work function; adsorbate-induced work function changes are particularly dramatic on Pt.

Fundamental Understanding of Mercury Removal from Coal Combustion

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ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (746 download)

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Book Synopsis Fundamental Understanding of Mercury Removal from Coal Combustion by : Erdem Sasmaz

Download or read book Fundamental Understanding of Mercury Removal from Coal Combustion written by Erdem Sasmaz and published by . This book was released on 2011 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Coal-fired power plants are a major anthropogenic source of worldwide mercury (Hg) emissions. Since mercury is considered to be one of the most toxic metals found in the environment, Hg emissions from coal-fired power plants is of major environmental concern. Mercury in coal is vaporized into its gaseous elemental form throughout the coal combustion process. Elemental Hg can be oxidized in subsequent reactions with other gaseous components (homogeneous) and solid materials (heterogeneous) in coal-fired flue gases. While oxidized Hg in coal-fired flue gases is readily controlled by its adsorption onto fly ash and/or its dissolution into existing solution-based sulfur dioxide (SO2) scrubbers, elemental Hg is not controlled. The extent of elemental Hg formed during coal combustion is difficult to predict since it is dependent on the type of coal burned, combustion conditions, and existing control technologies installed. Therefore, it is important to understand heterogeneous Hg reaction mechanisms to predict the speciation of Hg emissions from coal-fired power plants to design and effectively determine the best applicable control technologies. In this work, theoretical and experimental investigations have been performed to investigate the adsorption and in some cases the oxidation, of Hg on solid surfaces, e.g., calcium oxide (CaO), noble metals and activated carbon (AC). The objective of this research is to identify potential materials that can be used as multi-pollutant sorbents in power plants by carrying out both high-level density functional theory (DFT) electronic structure calculations and experiments to understand heterogeneous chemical pathways of Hg. This research uses a fundamental science-based approach to understand the environmental problems caused by coal-fired energy production and provides solutions to the power generation industry for emissions reductions. Understanding the mechanism associated with Hg and SO2 adsorption on CaO will help to optimize the conditions or material to limit Hg emissions from the flue gas desulfurization process. Plane-wave DFT calculations were used to investigate the binding mechanism of Hg species and SO2 on the CaO(100) surface. The binding strengths on the high-symmetry CaO adsorption sites have been investigated for elemental Hg, SO2, mercury chlorides (HgCl and HgCl2) and mercuric oxide (HgO). It has been discovered that HgCl, HgCl2, and SO2 chemisorb on the CaO(100) surface at 0.125 ML coverage. Binding energies of elemental Hg are minimal indicating a physisorption mechanism. Noble metals such as palladium (Pd), gold (Au), silver (Ag), and copper (Cu) have been proposed to capture elemental Hg. Plane-wave DFT calculations have been carried out to investigate the mercury interactions with Pd binary alloys and overlays in addition to pure Pd, Au, Ag, and Cu surfaces. It has been determined that Pd has the highest mercury binding energy in comparison to other noble metals. In addition, Pd is found to be the primary surface atom responsible for increasing the adsorption of Hg with the surface in both Pd binary alloys and overlays. Deposition of Pd overlays on Au and Ag has been found to enhance the reactivity of the surface by shifting the d-states of surface atoms up in energy. The possible binding mechanisms of elemental Hg onto virgin, brominated and sulfonated AC fiber and brominated powder AC sorbents have been investigated through packed-bed experiments in a stream of air and simulated flue gas conditions, including SO2, hydrogen chloride (HCl), nitrogen oxide (NO) nitrogen dioxide (NO2). A combination of spectroscopy and plane-wave DFT calculations was used to characterize the sorption process. X-ray photoelectron spectroscopy (XPS) and x-ray absorption fine structure (XAFS) spectroscopy were used to analyze the surface and bulk chemical compositions of brominated AC sorbents reacted with Hg0. Through XPS surface characterization studies it was found that Hg adsorption is primarily associated with halogens on the surface. Elemental Hg is oxidized on AC surfaces and the oxidation state of adsorbed Hg is found to be Hg2+. Though plane-wave DFT and density of states (DOS) calculations indicate that Hg is more stable when it is bound to the edge carbon atom interacting with a single bromine bound atop of Hg, a model that includes an interaction between the Hg and an additional Br atom matches best with experimental data obtained from extended x-ray absorption fine structure (EXAFS) spectroscopy. The flue gas species such as HCl and bromine (Br2) enhance the Hg adsorption, while SO2 is found to decrease the Hg adsorption significantly by poisoning the active sites on the AC surface. The AC sorbents represent the most market-ready technology for Hg capture and therefore have been investigated by both theory and experiment in this work. Future work will include similar characterization and bench-scale experiments to test the metal-based materials for the sorbent and oxidation performance.

Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards

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ISBN 13 :
Total Pages : 716 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards by :

Download or read book Index to Theses with Abstracts Accepted for Higher Degrees by the Universities of Great Britain and Ireland and the Council for National Academic Awards written by and published by . This book was released on 2008 with total page 716 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physics Briefs

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Publisher :
ISBN 13 :
Total Pages : 1126 pages
Book Rating : 4.3/5 (91 download)

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Book Synopsis Physics Briefs by :

Download or read book Physics Briefs written by and published by . This book was released on 1982 with total page 1126 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Density Functional Theory

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Publisher : John Wiley & Sons
ISBN 13 : 1118211049
Total Pages : 252 pages
Book Rating : 4.1/5 (182 download)

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Book Synopsis Density Functional Theory by : David S. Sholl

Download or read book Density Functional Theory written by David S. Sholl and published by John Wiley & Sons. This book was released on 2011-09-20 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: Demonstrates how anyone in math, science, and engineering can master DFT calculations Density functional theory (DFT) is one of the most frequently used computational tools for studying and predicting the properties of isolated molecules, bulk solids, and material interfaces, including surfaces. Although the theoretical underpinnings of DFT are quite complicated, this book demonstrates that the basic concepts underlying the calculations are simple enough to be understood by anyone with a background in chemistry, physics, engineering, or mathematics. The authors show how the widespread availability of powerful DFT codes makes it possible for students and researchers to apply this important computational technique to a broad range of fundamental and applied problems. Density Functional Theory: A Practical Introduction offers a concise, easy-to-follow introduction to the key concepts and practical applications of DFT, focusing on plane-wave DFT. The authors have many years of experience introducing DFT to students from a variety of backgrounds. The book therefore offers several features that have proven to be helpful in enabling students to master the subject, including: Problem sets in each chapter that give readers the opportunity to test their knowledge by performing their own calculations Worked examples that demonstrate how DFT calculations are used to solve real-world problems Further readings listed in each chapter enabling readers to investigate specific topics in greater depth This text is written at a level suitable for individuals from a variety of scientific, mathematical, and engineering backgrounds. No previous experience working with DFT calculations is needed.

Adsorption Technology in Water Treatment

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Publisher : Walter de Gruyter
ISBN 13 : 3110240238
Total Pages : 344 pages
Book Rating : 4.1/5 (12 download)

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Book Synopsis Adsorption Technology in Water Treatment by : Eckhard Worch

Download or read book Adsorption Technology in Water Treatment written by Eckhard Worch and published by Walter de Gruyter. This book was released on 2012-08-31 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Adsorption processes have played a central role in water treatment for many years but their importance is on the rise with the continuous discoveries of new micropollutants in the water cycle (pharmaceuticals for example). In addition to the classical application in drinking water treatment, other application fields are attracting increasing interest, such as wastewater treatment, groundwater remediation, treatment of landfill leachate, and so on. Based on the author's long-term experience in adsorption research, the scientific monograph treats the theoretical fundamentals of adsorption technology for water treatment from a practical perspective. It presents all the basics needed for experimental adsorption studies as well as for process modelling and adsorber design. Topics discussed in the monograph include: introduction into basic concepts and practical applications of adsorption processes; adsorbents and their characterisation, single and multi-solute adsorption equilibria, adsorption kinetics, adsorption dynamics in fixed-bed adsorbers and fixed-bed adsorber design, regeneration and reactivation of adsorbents, introduction into geosorption processes in bank filtration and groundwater recharge. According to the increasing importance of micropollutants in the water cycle, particular attention is paid to their competitive adsorption in presence of background organic matter. Clear illustrations, extensive literature references and a useful index make this work indispensible for both scientists and technicians involved in water treatment.

Inorganic Species in Water

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ISBN 13 :
Total Pages : 112 pages
Book Rating : 4.3/5 (121 download)

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Book Synopsis Inorganic Species in Water by : Thomas B. Hoover

Download or read book Inorganic Species in Water written by Thomas B. Hoover and published by . This book was released on 1978 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Technical Background Report for the Global Mercury Assessment 2013

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Publisher : UN
ISBN 13 : 9788279710806
Total Pages : 0 pages
Book Rating : 4.7/5 (18 download)

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Book Synopsis Technical Background Report for the Global Mercury Assessment 2013 by : United Nations Publications

Download or read book Technical Background Report for the Global Mercury Assessment 2013 written by United Nations Publications and published by UN. This book was released on 2013 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report details the technical background to the Global Mercury Assessment 2013 - Sources, Emissions, Releases and Environmental Transport (summary for policy-makers) that has been developed in response to Decision 25/5 III, paragraph 36 of the Governing Council of the United Nations Environment Programme (UNEP), that: 'Request the Executive Director, in consultation with Governments, to update the 2008 report entitled Global Atmospheric Mercury Assessment: Sources, Emissions and Transport for consideration by the Governing Council / Global Ministerial Environment Forum at its twenty-seventh session.' This technical background report has been developed in collaboration with the Arctic Monitoring and Assessment Programme (AMAP). As such, this report also constitutes a contribution to the work of AMAP and the Arctic Council

Carbon Dioxide Utilisation

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Publisher : Elsevier
ISBN 13 : 0444627480
Total Pages : 337 pages
Book Rating : 4.4/5 (446 download)

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Book Synopsis Carbon Dioxide Utilisation by : Peter Styring

Download or read book Carbon Dioxide Utilisation written by Peter Styring and published by Elsevier. This book was released on 2014-09-13 with total page 337 pages. Available in PDF, EPUB and Kindle. Book excerpt: Carbon Dioxide Utilisation: Closing the Carbon Cycle explores areas of application such as conversion to fuels, mineralization, conversion to polymers, and artificial photosynthesis as well as assesses the potential industrial suitability of the various processes. After an introduction to the thermodynamics, basic reactions, and physical chemistry of carbon dioxide, the book proceeds to examine current commercial and industrial processes, and the potential for carbon dioxide as a green and sustainable resource. While carbon dioxide is generally portrayed as a "bad" gas, a waste product, and a major contributor to global warming, a new branch of science is developing to convert this "bad" gas into useful products. This book explores the science behind converting CO2 into fuels for our cars and planes, and for use in plastics and foams for our homes and cars, pharmaceuticals, building materials, and many more useful products. Carbon dioxide utilization is a rapidly expanding area of research that holds a potential key to sustainable, petrochemical-free chemical production and energy integration. Accessible and balanced between chemistry, engineering, and industrial applications Informed by blue-sky thinking and realistic possibilities for future technology and applications Encompasses supply chain sustainability and economics, processes, and energy integration

Materials for Carbon Capture

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Publisher : John Wiley & Sons
ISBN 13 : 1119091179
Total Pages : 397 pages
Book Rating : 4.1/5 (19 download)

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Book Synopsis Materials for Carbon Capture by : De-en Jiang

Download or read book Materials for Carbon Capture written by De-en Jiang and published by John Wiley & Sons. This book was released on 2020-02-25 with total page 397 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covers a wide range of advanced materials and technologies for CO2 capture As a frontier research area, carbon capture has been a major driving force behind many materials technologies. This book highlights the current state-of-the-art in materials for carbon capture, providing a comprehensive understanding of separations ranging from solid sorbents to liquid sorbents and membranes. Filled with diverse and unconventional topics throughout, it seeks to inspire students, as well as experts, to go beyond the novel materials highlighted and develop new materials with enhanced separations properties. Edited by leading authorities in the field, Materials for Carbon Capture offers in-depth chapters covering: CO2 Capture and Separation of Metal-Organic Frameworks; Porous Carbon Materials: Designed Synthesis and CO2 Capture; Porous Aromatic Frameworks for Carbon Dioxide Capture; and Virtual Screening of Materials for Carbon Capture. Other chapters look at Ultrathin Membranes for Gas Separation; Polymeric Membranes; Carbon Membranes for CO2 Separation; and Composite Materials for Carbon Captures. The book finishes with sections on Poly(amidoamine) Dendrimers for Carbon Capture and Ionic Liquids for Chemisorption of CO2 and Ionic Liquid-Based Membranes. A comprehensive overview and survey of the present status of materials and technologies for carbon capture Covers materials synthesis, gas separations, membrane fabrication, and CO2 removal to highlight recent progress in the materials and chemistry aspects of carbon capture Allows the reader to better understand the challenges and opportunities in carbon capture Edited by leading experts working on materials and membranes for carbon separation and capture Materials for Carbon Capture is an excellent book for advanced students of chemistry, materials science, chemical and energy engineering, and early career scientists who are interested in carbon capture. It will also be of great benefit to researchers in academia, national labs, research institutes, and industry working in the field of gas separations and carbon capture.

Scientific and Technical Aerospace Reports

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Publisher :
ISBN 13 :
Total Pages : 702 pages
Book Rating : 4.:/5 (31 download)

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Book Synopsis Scientific and Technical Aerospace Reports by :

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 702 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Guide to Best Practices for Ocean Acidification Research and Data Reporting

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ISBN 13 :
Total Pages : 264 pages
Book Rating : 4.3/5 (21 download)

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Book Synopsis Guide to Best Practices for Ocean Acidification Research and Data Reporting by :

Download or read book Guide to Best Practices for Ocean Acidification Research and Data Reporting written by and published by . This book was released on 2011 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

WRC Information

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ISBN 13 :
Total Pages : 624 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis WRC Information by : Water Research Centre (Great Britain)

Download or read book WRC Information written by Water Research Centre (Great Britain) and published by . This book was released on 1984 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Recent Advances in Adsorption Processes for Environmental Protection and Security

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Publisher : Springer Science & Business Media
ISBN 13 : 1402068034
Total Pages : 201 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Recent Advances in Adsorption Processes for Environmental Protection and Security by : José Paulo Mota

Download or read book Recent Advances in Adsorption Processes for Environmental Protection and Security written by José Paulo Mota and published by Springer Science & Business Media. This book was released on 2007-10-30 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the Workshop was to share knowledge on the latest advances on adsorption processes for environmental security and protection, as well as to disseminate the main results and achievements of recent NATO Science-for-Peace projects on environmental security and protection. This volume provides a comprehensive report on adsorption and colloids phenomena, carbon materials and adsorbents for various industrial applications, ecological safety and antiterrorism.

NBS Special Publication

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ISBN 13 :
Total Pages : 416 pages
Book Rating : 4.F/5 ( download)

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Book Synopsis NBS Special Publication by :

Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 416 pages. Available in PDF, EPUB and Kindle. Book excerpt: